try this,

1st - use anko barrier, then use it again to kill the puppets so sasori cant use em to revive himself.
2nd - use Neji rather than zabuza to interrupt sasori skill
3rd - level up and get bit more power, sometimes the best tactic is to just overlevel/power the said instance

hmm, then the last tactic is to change main; i passed it using firemain with team 7; lineup is

sasuke - sakura - x
main - naruto - x
x - x - x

1 - all my ninja at that time is 3 star except sakura
2 - fully upgraded
3 - have access to all main skill aka was level 55 that time

skill 23123 summon chameleon, i targeted sasori the whole time so all come + him always under my main and team combo, and main skill flame dragon is the bane to clone and puppet.
hope that helps.